Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Argument\IteratorArgument" not found in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Argument\TaggedIteratorArgument.php:19 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Argument\TaggedIteratorArgument.php on line 19